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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11525329 B1

PDFFull Text
Date of Patent:
Dec. 13, 2022

Filed:

Oct. 29, 2018

Apparatus for use in well abandonment

Applicant:

Bisn Tec Ltd, Warrington, GB;

Inventor:

Paul Carragher, Lymm, GB;

Assignee:

BiSN Tec. Ltd., Cheshire, GB;

Attorney:
Primary Examiner:

Jennifer H Gay

Int. Cl.
CPC ...
E21B 33/12 (2006.01); E21B 33/134 (2006.01); E21B 33/13 (2006.01); C22C 12/00 (2006.01); E21B 27/02 (2006.01); E21B 36/00 (2006.01); E21B 33/136 (2006.01); E21B 17/10 (2006.01); C06B 33/00 (2006.01); C06B 47/00 (2006.01); C09K 8/42 (2006.01); C22C 9/00 (2006.01); E21B 47/00 (2012.01);
U.S. Cl.
CPC ...
E21B 33/13 (2013.01); C06B 33/00 (2013.01); C06B 47/00 (2013.01); C09K 8/426 (2013.01); C22C 9/00 (2013.01); C22C 12/00 (2013.01); E21B 17/1028 (2013.01); E21B 27/02 (2013.01); E21B 33/12 (2013.01); E21B 33/1204 (2013.01); E21B 33/1208 (2013.01); E21B 33/134 (2013.01); E21B 33/136 (2013.01); E21B 36/008 (2013.01); E21B 47/00 (2013.01);
Abstract

A plug for plugging wells, and in particular oil and gas wells, is provided. The plug has a plug body formed from an outer metal tube of a reduced thickness. The plug also has reinforcement means, attached to an inner surface of the outer tube, that give the plug a cross-sectional structural strength that is at least equivalent to that of a thicker metal tube. The plug has a central heater receiving void located along the axis of the plug to enable a plug deployment heater to be received therein. Also provided is a plug assembly with a variable cross-sectional area in a plane perpendicular to the plane in which the assembly is deployed during the plugging of underground conduits.

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